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GIS
1998
ACM
13 years 7 months ago
Natural-Language Spatial Relations Between Linear and Areal Objects: The Topology and Metric of English-Language Terms
Spatial relations are the basis for many selections users perform when they query geographic information systems (GISs). Although such query languages use natural-language-like te...
A. Rashid B. M. Shariff, Max J. Egenhofer, David M...
MP
1998
113views more  MP 1998»
13 years 7 months ago
Generalized semi-infinite optimization: A first order optimality condition and examples
We consider a generalized semi-infinite optimization problem (GSIP) of the form (GSIP) min{f(x) Ix E M}, where M = {x E N"lhi(x ) = 0, i = 1,...,m, G(x,y) /> 0, y E Y(x)} ...
Hubertus Th. Jongen, Jan-J. Rückmann, Oliver ...
PAMI
1998
107views more  PAMI 1998»
13 years 7 months ago
Graph Matching With a Dual-Step EM Algorithm
—This paper describes a new approach to matching geometric structure in 2D point-sets. The novel feature is to unify the tasks of estimating transformation geometry and identifyi...
Andrew D. J. Cross, Edwin R. Hancock
RC
2002
103views more  RC 2002»
13 years 7 months ago
Exact Minkowski Products of N Complex Disks
An exact parameterization for the boundary of the Minkowski product of N circular disks in the complex plane is derived. When N > 2, this boundary curve may be regarded as a gen...
Rida T. Farouki, Helmut Pottmann
TROB
2002
126views more  TROB 2002»
13 years 7 months ago
Modeling and controllability for a class of hybrid mechanical systems
Abstract-- This work studies a class of hybrid mechanical systems that locomote by switching between constraints defining different dynamic regimes. We develop a geometric framewor...
Francesco Bullo, Milos Zefran